Battery Caddy OverviewUpdated 2 days ago

What the Battery Caddy is for:

The Battery Caddy is a portable hub that lets you carry, charge, discharge, and power USB devices from your Foil Drive battery. Using the caddy helps physically protect the battery and prolong top‑end performance by making it easy to store the battery at an ideal state of charge (SoC) between sessions.

What can the Battery Caddy do:

Charging

Accepts Foil Drive chargers (40 V Standard, 40 V Fast, 43 V Standard). When a Foil Drive charger is inserted, the screen automatically switches to Charging Mode and shows approximate time remaining.

Discharging to a target SoC

Caddy Discharging Mode draws the battery down to a preset SoC you choose (recommended 60 % for storage). The display shows time remaining until the target is reached.

USB power output

USB‑C port (up to 65 W) and USB‑A port (10 W) for phones, tablets, cameras, and similar devices. USB output can be used in Standby or while the caddy is discharging.

Safety features

Temperature cut‑off at 50 °C (122 °F): caddy functions pause until it cools to a safe temperature.
On‑screen status for SoC, modes, and time estimates and warnings.

Foil Drive Battery Compatibilities:

Fusion 43 V: Fusion 860 (auto‑detected by the caddy).

Assist MAX 40 V: MAX High Power, MAX Power, MAX Travel (select battery type on‑screen for accurate SoC/time).

Not compatible: MAX Sport and MAX Slim (the physical size of these batteries are too small/short).

Foil Drive Charger Compatibilities:

40 V Standard, 40 V Fast, 43 V Standard.

Please make sure you have the correct charger for your battery. The voltage of the charger should match the voltage of your battery.

Controls and Ports:

Power On/Off: hold the power button for 3 seconds.
Navigation buttons: Settings, Discharge/Standby, Back, Confirm, Down, Cancel.
Ports: Foil Drive charging port, USB‑C (65 W), USB‑A (10 W).

HOW TO USE THE BATTERY CADDY:

1) Before you begin

Inspect all electrical components. Do not use if battery is wet, damaged, swollen, leaking, or corroded.

Keep the battery/caddy dry, handle with clean, dry hands, and avoid moisture.

Charge in a cool, dry, non‑flammable area and monitor while charging.

Normal charging temperature: 10–40 °C.

2) Charging your Foil Drive battery

Insert the Foil Drive battery into the caddy and secure the latches.

Plug the Foil Drive charger into the caddy’s charging port and turn the charger on at the wall.

The display switches to Charging Mode and shows time remaining.
While charging, Caddy Discharging is disabled; USB outputs remain available.

3) Discharging to a storage SoC (recommended 60 %)

Use this after a session to put the battery away at an optimal SoC:

Power on the caddy (hold 3 s).

From Standby, press the small battery icon (right side of screen).

Confirm “Activate Caddy Discharge Mode.”

(Optional) In Discharge % settings, set your target (e.g., 60 %).

The caddy starts discharging; the screen shows time remaining to target SoC.

When caddy discharging is on, place the caddy on its side for airflow across the metal heatsink. Avoid soft surfaces (blankets), direct sun, and hot environments. At ≥ 50 °C (122 °F), a temperature cut‑off stops functions until cooled.

4) Using USB power

USB Discharging Mode (auto):
Insert a cable into USB‑A or USB‑C.
When the USB Output light flashes, USB power is active.
Remove the device to exit USB Discharge Mode.

You can use USB outputs while the caddy is discharging to reach your target SoC faster.

Safety and Care:

Monitor the battery while charging; keep away from flammables.
If storing the battery for longer than 2 weeks without use - store at 30–60 % SoC; cool, dry storage.
Disconnect the caddy from the charger immediately after use.
Use only Foil Drive‑supplied equipment and follow the instructions in the manuals.

Do Not:

Avoid exposing the battery/caddy to heat, humidity, direct sun, flame, or water.
Drop, puncture, dismantle, modify, or repurpose the battery, caddy or charger.
Short‑circuit or reverse polarity on the terminals.
Use the system if wet or damaged.

TROUBLESHOOTING/FAQ'S:

MAX Battery Detected while discharging Fusion 860 Battery:

Your Caddy discharge output is too low and the Battery has gone to sleep - the Caddy can no longer detect the battery. Plug in a device like your laptop into the USB output to increase the power output to wake the battery up.

Caddy won’t start discharging:

Check that the charger isn’t connected (Caddy Discharging is disabled while charging), that you confirmed activation, and that the unit is below 50 °C.

Caddy stopped during discharge; screen mentions temperature:

The temperature cut‑off engaged at 50 °C. Move to a cool, shaded area, place the caddy on its side for airflow, and wait for the Battery Caddy to cool.

USB ports not outputting power:

Ensure the caddy is powered on, the battery is inserted, and the USB Output light is flashing.

Charging seems slow near full:

This is expected—the caddy ramps down from ~91 % to 100 % to protect the battery.

Related Articles - Click to read:

Lithium Battery Care, Use and Storage

Charging in Car or From 12v Power Sources

To learn more, check out the other articles on our Help Centre which can be found under the 'Support' tab on the website.

As always, if you have any questions, please reach out to us at [email protected].

Happy Foil Driving!

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